Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 47, NWS Little Rock, AR

March 29, 20114 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Mar 29, 2011, 7:47 PM CDT for 4 counties in Arkansas. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 29, 2011, 7:47 PM CDT (00:47 UTC)
Expired
Mar 29, 2011, 8:30 PM CDT
In force
43 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon

Counties Lonoke County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR

The radar

The Little Rock radar (KLZK), 17 km from the middle of the area, began a volume at 00:48 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 0.8 hours before the alert went out and 197 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 00:00Z on 2011-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2011-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 210 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
463 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
210 m²/s²
0-3 km storm-relative helicity
394 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 29, 2:34 PM CDT, 5 hours 13 minutes earlier.

Area forecast discussion, Mar 29, 2:34 PM CDT, 5 hours 13 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
234 PM CDT TUE MAR 29 2011

.SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT
SYSTEM PASSING BY TO THE SOUTH WILL CONTINUE TO SEND MOISTURE INTO
THE REGION. THE RESULT WILL BE SHOWERS AND ISOLATED THUNDERSTORMS
SPREADING SOUTHEAST AND EAST THIS AFTERNOON AND EVENING. NOT
EXPECTING ANY WIDESPREAD/ORGANIZED SEVERE STORMS. HOWEVER...THERE
COULD BE SOME STRONGER STORMS THAT PRODUCE NON-SEVERE HAIL...BUT
COVERAGE WILL BE ISOLATED.

PRECIP SHOULD CLEAR OUT LATE TONIGHT AS HIGH PRESSURE PUSHES INTO
THE REGION. THIS WILL BE SHORT-LIVED...HOWEVER...AS AN UPPER
TROUGH SWINGS DOWN OUT OF THE PLAINS WEDNESDAY NIGHT AND EARLY
THURSDAY...BRINGING ANOTHER CHANCE OF SHOWERS AND ISOLATED STORMS.

FRIDAY...A COLD FRONT WILL PUSH INTO THE REGION...WITH DRIER AIR
MOVING IN BEHIND IT. THE FRONT WILL STALL OUT TO THE SOUTH OF
ARKANSAS...AND EVENTUALLY WILL MOVE BACK OVER THE STATE AS A WARM
FRONT IN THE LONG TERM PERIOD.

TEMPERATURES WILL LARGELY REMAIN BELOW SEASONAL AVERAGES...ESPECIALLY
DAYTIME HIGH TEMPERATURES. BY FRIDAY...WARMING WILL BE NOTED AHEAD
OF THE FRONT...WITH TEMPERATURES BACK IN THE 60S AND 70S.
&&

.LONG TERM...SATURDAY THROUGH TUESDAY
HIGH PRESSURE AT THE SURFACE WILL MOVE EAST SATURDAY...WITH RETURN
FLOW MOVING BACK OVER THE STATE FOR SUNDAY. HAVE KEPT SMALL POPS IN
THE FORECAST FOR SUNDAY AFTERNOON AND OVERNIGHT...AS A WARM FRONT
MOVES NORTH OVER THE STATE.

ATTENTION WILL THEN TURN TO MONDAY...AS STRONG COLD FRONT WILL
DEVELOP TO THE WEST. THERE ARE TIMING DIFFERENCES...AND WILL
CONTINUE TO BLEND THE FASTER EURO WITH THE SLOWER GFS...WHICH WILL
KEEP POPS IN THROUGH EARLY TUESDAY. DEPENDING ON THE TIMING AND
PLACEMENT OF THE SYSTEM...THERE IS POTENTIAL FOR STRONG STORMS. FOR
NOW...WILL CONTINUE TO MONITOR AND MENTION IN THE HWO...AND WILL KEEP
CHANCE POPS IN THE FORECAST.

COOLER AIR WILL MOVE IN BEHIND THE FRONT...WITH LARGE TEMPERATURE
SWINGS CONTINUING TO MARK THIS SPRING SEASON.
&&

.PRELIMINARY POINT TEMPS/POPS...
BATESVILLE AR     36  57  37  58 /  70  10  40  40
CAMDEN AR         44  63  39  66 /  80  10  30  30
HARRISON AR       34  53  37  59 /  50  10  40  40
HOT SPRINGS AR    42  61  39  63 /  60  20  40  30
LITTLE ROCK   AR  41  60  41  62 /  70  20  40  40
MONTICELLO AR     46  62  42  65 /  80  10  30  40
MOUNT IDA AR      38  59  37  62 /  50  20  40  30
MOUNTAIN HOME AR  35  56  38  61 /  60  10  40  40
NEWPORT AR        37  58  38  60 /  70  10  40  40
PINE BLUFF AR     42  59  41  63 /  80  10  40  40
RUSSELLVILLE AR   40  58  40  62 /  50  20  40  40
SEARCY AR         39  57  40  60 /  70  10  40  40
STUTTGART AR      41  57  41  61 /  80  10  40  40
&&

.LZK WATCHES/WARNINGS/ADVISORIES...NONE.
&&

SHORT TERM...57 / LONG TERM...58
Hazardous weather outlook, Mar 29, 5:00 AM CDT, 14 hours 47 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
500 AM CDT TUE MAR 29 2011

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-301000-
ARKANSAS-BAXTER-BOONE-BRADLEY-CALHOUN-CLARK-CLEBURNE-CLEVELAND-
CONWAY-DALLAS-DESHA-DREW-FAULKNER-FULTON-GARLAND-GRANT-HOT SPRING-
INDEPENDENCE-IZARD-JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-LONOKE-
MARION-MONROE-MONTGOMERY-NEWTON-OUACHITA-PERRY-PIKE-POLK-POPE-
PRAIRIE-PULASKI-SALINE-SCOTT-SEARCY-SHARP-STONE-VAN BUREN-WHITE-
WOODRUFF-YELL-
500 AM CDT TUE MAR 29 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS.

.DAY ONE...TODAY AND TONIGHT

A DEVELOPING STORM SYSTEM IS FORECAST TO AFFECT ARKANSAS LATER TODAY
AND TONIGHT...BRINGING THE LIKELIHOOD OF SHOWERS AND THUNDERSTORMS
STATEWIDE. THE SYSTEM WILL TRACK SOUTH OF ARKANSAS...LIMITING THE
POTENTIAL FOR WIDESPREAD SEVERE WEATHER. HOWEVER...SOME OF THE
STRONGER STORMS COULD PRODUCE HAIL UP TO ONE INCH IN DIAMETER. RAIN
CHANCES WILL DIMINISH FROM THE WEST TONIGHT AS THE LOW SHIFTS
EASTWARD.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

ANOTHER LOW PRESSURE SYSTEM WILL BRING SCATTERED SHOWERS AND A FEW
THUNDERSTORMS BACK TO THE NATURAL STATE FROM THURSDAY INTO FRIDAY.
CURRENT INDICATIONS ARE THAT CONDITIONS WILL NOT BE FAVORABLE FOR
WIDESPREAD SEVERE WEATHER...BUT A FEW STORMS COULD PRODUCE HAIL UP
TO ONE INCH IN DIAMETER.

SHOWER AND THUNDERSTORM CHANCES WILL AGAIN RETURN TO THE MID SOUTH
EARLY NEXT WEEK WHEN A COLD FRONT IS FORECAST TO MOVE INTO THE
REGION. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP
ALONG AND AHEAD OF THE FRONT...WITH THE POTENTIAL FOR LARGE HAIL AND
DAMAGING WINDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

&&

VISIT NWS LITTLE ROCK ON THE WEB. GO TO HTTP://WEATHER.GOV AND
CLICK ON CENTRAL ARKANSAS.

44

In the hours before

Special weather statement, Mar 29, 3:23 PM CDT, 4 hours 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
323 PM CDT TUE MAR 29 2011

ARZ016-024-025-292110-
CLEBURNE AR-INDEPENDENCE AR-JACKSON AR-
323 PM CDT TUE MAR 29 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CLEBURNE...SOUTHERN
INDEPENDENCE AND NORTHERN JACKSON COUNTIES UNTIL 415 PM CDT...

AT 323 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 4 MILES SOUTH OF BANNER...OR 11 MILES SOUTH OF
MELROSE...MOVING EAST AT 50 MPH.

HAIL UP TO THE SIZE OF NICKELS IS EXPECTED WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  NEWPORT...            DIAZ...               TUCKERMAN...
  SWIFTON...            SALADO...             PLEASANT PLAINS...
  OIL TROUGH...         NEWARK...             MAGNESS...
  JACKSONPORT...        GRUBBS...             CONCORD...
  SULPHUR ROCK...       ROSIE...              MACKS...
  KENYON...             HUTCHINSON...         HUFF...

LAT...LON 3553 9168 3554 9179 3551 9180 3550 9184
      3567 9190 3590 9108 3589 9103 3566 9103
TIME...MOT...LOC 2023Z 253DEG 45KT 3561 9175

46
Local storm report, Mar 29, 3:48 PM CDT, 3 hours 59 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Local storm report, Mar 29, 3:56 PM CDT, 3 hours 51 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Special weather statement, Mar 29, 6:44 PM CDT, 1 hour 3 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Local storm report, Mar 29, 7:38 PM CDT, 9 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 29, 7:07 PM CDTSevere Thunderstorm WarningLZKGarland, Hot Spring, Pulaski, Saline38 min
Mar 29, 7:46 PM CDTSevere Thunderstorm WarningLZKFaulkner, Lonoke, Prairie, Pulaski, White44 min
Mar 29, 7:54 PM CDTSevere Thunderstorm WarningLZKLonoke, Pulaski, Saline30 min
Mar 29, 8:26 PM CDTSpecial Weather StatementLZKJackson44 min
Mar 29, 8:36 PM CDTSevere Thunderstorm WarningLZKIndependence, Jackson39 min
Mar 29, 11:44 PM CDTSpecial Weather StatementLZKMonroe31 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2011Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.